IS it possible? I guess I should say that of course it possible. What is needed, just the gearset? Is 1st and 5th the only different gears or are they all different. I would just go out and buy a WR but I have too much into this and I am waiting for the aluminum frames anyway. My bike is set up awesome except that on really gnarly stuff I could use the lower 1st. However, if I am going to open it up then I might as well just do them all. I need details..... who has done this?